Water cooler reservoir



FIG. 1 is a rear perspective view of a water cooler reservoir showing mynew design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being amirror-image of FIG.4;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a cross-sectional view thereof, taken along line 7--7 of FIG.2.

The ornamental design for a water cooler reservoir, as shown anddescribed.